「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！

Design patterns implemented in Java

Free and Open Source, Distributed, RESTful Search Engine

Everything you need to know to get the job.

All Algorithms implemented in Java

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

The java implementation of Apache Dubbo. An RPC and microservice framework.

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

Netty project - an event-driven asynchronous network application framework

快速、简洁、解决大文件内存溢出的java处理Excel工具

Apollo is a reliable configuration management system suitable for microservice configuration management scenarios.

🍬A set of tools that keep Java sweet.

Telegram for Android source

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

Redisson - Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava/Reactive API. Over 50 Redis or Valkey based Java objects and services: Set, Multimap, SortedSet, …

a fast, scalable, multi-language and extensible build system

😱 从源码层面，剖析挖掘互联网行业主流技术的底层实现原理，为广大开发者 “提升技术深度” 提供便利。目前开放 Spring 全家桶，Mybatis、Netty、Dubbo 框架，及 Redis、Tomcat 中间件等

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

Distributed SQL transaction & query engine for data sharding, scaling, encryption, and more - on any database.

CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。

A fast dependency injector for Android and Java.

Zipkin is a distributed tracing system

A high performance caching library for Java

Most popular Mocking framework for unit tests written in Java

Vert.x is a tool-kit for building reactive applications on the JVM

🏗 Build container images for your Java applications.

Luban(鲁班)—Image compression with efficiency very close to WeChat Moments/可能是最接近微信朋友圈的图片压缩算法

APM, (Application Performance Management) tool for large-scale distributed systems.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

Admin UI for administration of spring boot applications